Design And Implementation Of Color Image Sonar Simulation And Digital Compensation System

Because of the vast area of the earth’s Marine resources,we have programmed a program of strategic and developmental significance for the exploration of the ocean underwater.But under the water environment is complex,different regional hydrological environment,let the underwater detection becomes more difficult,or even on a short distance underwater video camera cannot identify the target,let alone take clear picture.Under such background,underwater sonar scanning imaging equipment has solved this problem to some extent.Yet is suitable for ships,naval ships or dam underwater sonar equipment generally are heavy and bulky,such equipment is not convenient for application in underwater salvage divers work.Therefore the author’s laboratory aimed at the shortcoming of traditional equipment a large number of research developed an applicable to man-portable multi-functional portable underwater sonar equipment,the equipment design is exquisite,powerful,clear high resolution imaging.The equipment has been successfully used in underwater search and rescue,underwater salvage and other fields.Along with the development of The Times,the development of science and technology of the laboratory equipment has been continuously improved and improved.The main contents of this paper are as follows:(1)the TKIS-I low is a major component of color image sonar system are introduced,at the same time will be the cause of the underwater acoustic signal transmission attenuation,and compensate the distance gain compensation of the purpose,significance and the design of the model,the last is about the presence of compensation of the experimental results.(2)the conception of the overall design of the analog compensation,which used to simulate compensation AD605 programmable amplifier chip are introduced and illustrated,and the demand of the DAC output curve under different range for debugging,hardware circuit design,and finally to STM32 for platform design simulation software system of compensation system and compensation threshold,according to TIM6 timer setting cycle,designed by the timer is triggered by the DAC output curve control threshold value of compensation.(3)according to the system upgrade is complete the overall design of the compensation for the digital,digital compensation directly without hardware circuit by the software implementation,according to the principle of image sonar system design compensation value and the range of parameters.In the end,the two compensation methods of analog compensation and digital compensation are compared and analyzed.(4)the effect of simulation compensation and digital compensation system is verified by a large number of experiments,and the experimental results are analyzed and compared.